Liberty Cruise Control
Liberty Cruise Control
I want to know if the cruise control should behave as it does in my wife's Liberty Heritage auto (work car).
It keeps just driving the car until way over cruise speed, then backs off and starts engine braking.
If I put the car in sport mode, and then into 2nd gear, there is considerable engine braking at 80kph.
But if I set the cruise at 80kph, then let the car run in 2nd gear, when it goes downhill, the cruise seem to let the car speed up until over 90kph, and _then_ I feel the engine braking kick in.
I am using 2nd gear for this test. I know the auto will not brake me much in auto mode. I want to really highlight the problem, by making engine braking really effective and obvious. I was using 3rd in hilly situations, because 3rd will brake quite well, but I needed to _really_ show the problem.
Any help appreciated.
Nick
It keeps just driving the car until way over cruise speed, then backs off and starts engine braking.
If I put the car in sport mode, and then into 2nd gear, there is considerable engine braking at 80kph.
But if I set the cruise at 80kph, then let the car run in 2nd gear, when it goes downhill, the cruise seem to let the car speed up until over 90kph, and _then_ I feel the engine braking kick in.
I am using 2nd gear for this test. I know the auto will not brake me much in auto mode. I want to really highlight the problem, by making engine braking really effective and obvious. I was using 3rd in hilly situations, because 3rd will brake quite well, but I needed to _really_ show the problem.
Any help appreciated.
Nick
Actually with an early model liberty, such as mine, i can change gears, and the cruise control stays on.El_Freddo wrote:Also by setting the cruise then dropping it into 2nd, the computer MAY cancel the cruise because you've changed the "mode" of the car - same as a manual when you push the clutch pedal...
Bennie
- Outback bloke
- Senior Member
- Posts: 2103
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- Location: Morayfield - Queensland
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If it is an early Heritage then the cruise was a bit hit and miss with maintaining a constant speed. They were close but would vary by up to 10-15k's in undulating roads. Flat road driving they were pretty good. The engine braking down hills is just about non-existent at times and will allow the car to run up to 20k's or more over depending on the gradient.
My 04 model will do it too although not quite as much.
My 04 model will do it too although not quite as much.
Thanks for the replies.
Sorry. I should have said. This is a Heritage, with 18,000 km on the clock. Way less than a year old.
I would like to know _why_ I can't use the CC up or downhill. That's pretty lame. I can understand that if you leave it in auto it will not work, but ....
The cruise does still work, whether I change gears or not. You can feel it kick in. It just seems to be really lame.
It has nothing to do with the auto. As I say I went into 2nd (both before and after applying cruise) and the sensing just seems really poor. This car was not a cheap car.
Anyway. Thanks for the replies guys. It seems this is as designed.
Nick
Sorry. I should have said. This is a Heritage, with 18,000 km on the clock. Way less than a year old.
I would like to know _why_ I can't use the CC up or downhill. That's pretty lame. I can understand that if you leave it in auto it will not work, but ....
The cruise does still work, whether I change gears or not. You can feel it kick in. It just seems to be really lame.
It has nothing to do with the auto. As I say I went into 2nd (both before and after applying cruise) and the sensing just seems really poor. This car was not a cheap car.
Anyway. Thanks for the replies guys. It seems this is as designed.
Nick
- AlpineRaven
- Senior Member
- Posts: 3682
- Joined: Wed Oct 19, 2005 10:00 am
- Location: Melbourne, Victoria, Australia.
For mine - Gen 2 Liberty manual, I use cruise at any situation (I know ppl have told me) but i find it "ok" to use in hilly areas, when i push the clutch (to change gears) in it cancels cruise and resume by pressing up button, down hill cruise does cut throttle (doesn't brake) and try maintain cruise speed... Up hills, cruise tries to catch up the speed and most of the time it does, I find it very handy after Bacchus Marsh up in the hills that it can maintain the speeds. I know when you're going down hill you might notice "shudder/jerking" feeling which is the cruise open/closing the throttle which is normal, the Commodore I drove a few weeks back did the same thing.
Cheers
AP
Cheers
AP
Subarus that I have/had:
1995 Liberty "Rallye" - 5MT AWD, LSD - *written off 25/8/06 in towing accident.
1996 Liberty Wagon - SkiFX AWD 5MT D/R, Lifted.. Outback Sway Bar, 1.59:1 Low Gearing see thread: 1.59:1 in EJ Box Page
Sold at 385,000kms in July 2011.
2007 Liberty BP Wagon, 2.5i automatic
1995 Liberty "Rallye" - 5MT AWD, LSD - *written off 25/8/06 in towing accident.
1996 Liberty Wagon - SkiFX AWD 5MT D/R, Lifted.. Outback Sway Bar, 1.59:1 Low Gearing see thread: 1.59:1 in EJ Box Page
Sold at 385,000kms in July 2011.
2007 Liberty BP Wagon, 2.5i automatic
oldnick...my car is the same, but you cant seriously expect it to engine brake down steep hills. A hill like kalamunda rd if i set the criuse to say 70km the car will be going 90 or even 100 by the time i get to the bottom of the hill.
If youre driving on undulating roads i think its best and safest to leave the cruise control alone and drive the car normally. Id personally like to see any other brand of car do differently to the subi. Theres nothing LAME about them
alex
If youre driving on undulating roads i think its best and safest to leave the cruise control alone and drive the car normally. Id personally like to see any other brand of car do differently to the subi. Theres nothing LAME about them
alex
my07 Outback
my13 Hyundai i45(shhhh)
my02 Gen3 Liberty limited ed.
previously
L-series wagon, LSD, EJ20turbo, 29in tyres, 'wanky wagon'
2000 gen3 outback, lifted, otherwise stock.
my13 Hyundai i45(shhhh)
my02 Gen3 Liberty limited ed.
previously
L-series wagon, LSD, EJ20turbo, 29in tyres, 'wanky wagon'
2000 gen3 outback, lifted, otherwise stock.
Are suby ones smart enough to turn the CC off when you shift into neutral?
VT Commodore ones aren't heh.....shift it into neutral and it will just floor it and constantly bounce the rev limiter
VT Commodore ones aren't heh.....shift it into neutral and it will just floor it and constantly bounce the rev limiter
EZ30 L series - Monsterwagon
https://www.ausubaru.com.au/viewtopic.php?f=71&t=26163
https://www.ausubaru.com.au/viewtopic.php?f=71&t=26163
In Auto, no. But as I said in my post, I am running in 2nd gear! Serious engine braking. What I am testing is nothing like Kalamnuda Hill (really good fun on a pushbike I believe).Keffa wrote:oldnick...my car is the same, but you cant seriously expect it to engine brake down steep hills. A hill like kalamunda rd if i set the criuse to say 70km the car will be going 90 or even 100 by the time i get to the bottom of the hill.
If youre driving on undulating roads i think its best and safest to leave the cruise control alone and drive the car normally. Id personally like to see any other brand of car do differently to the subi. Theres nothing LAME about them
alex
This is the issue:
What happens is not an engine braking thing (except on one hill where even 2nd gear is not enough). I feel the car speed up (or waft up) to over 90kph and _then_ there is a definite pull-back, which even starts to slow the car down in 2nd. But by then you are way over ticket speed.
I agree the Heritage is an awesome car to drive. We do the last 3Km on winding gravel, after going along hilly curvy roads (Gidgegannup hinterlands) and the thing is fun. But the cruise is not good. The last one we had with cruise was a Ford, and it was a LOT better using the same low-gear tests, on the same roads. 2-3kph max overrun.
I really believe that Subaru have been thrown because they get the jerkiness in lower gears, because they cut off the fuel completely to get better F/E, when the throttle is backed right off. So if you try to just maintain speed downhill by feathering the throttle (no cruise), you often sit right on the on/off point. The car will jerk as it travels. So they have made the cruise super soft to stop this. I believe this because I saw mentioned here that Subi was fitting cruise to manual cars, which most makers do not. The manuals would get the jerkiness all the time.